A fluorophore-labeled human cell. A fluorophore (or fluorochrome, similarly to a chromophore) is a fluorescent chemical compound that can re-emit light upon light excitation. Fluorophores typically contain several combined aromatic groups, or planar or cyclic molecules with several Ï bonds.
IN THIS TOPIC. Pregnancy symptoms are different for everyone, and can vary from month to month and even from pregnancy to pregnancy. Find out what to expect, from the earliest pregnancy symptoms to the wooziness of morning sickness to the aches and pains of your third trimester.
When does morning sickness start? Nausea and vomiting can be the first sign of pregnancy but when do you start feeling queasy - and what does it mean if you don't? Morning sickness is one of the best-known (and most obvious!) symptoms of pregnancy. âMorning sickness often starts from 6 weeks - around two weeks after you miss your period, explains GP Dr Philippa Kaye.